Update LayoutTest expectations for plugins on linux

Several of them pass, so only blacklist the ones that actually fail.

BUG=318978

Review URL: https://codereview.chromium.org/1817433002

Cr-Commit-Position: refs/heads/master@{#381887}

third_party/WebKit/LayoutTests/TestExpectations

@@ -560,25 +560,39 @@ crbug.com/517840 imported/web-platform-tests/webrtc/rtcpeerconnection/rtcpeercon
 
 # Linux Aura doesn't support NPAPI plugins (yet?)
 crbug.com/318978 [ Linux ] compositing/plugins/invalidate_rect.html [ Skip ]
-crbug.com/318978 [ Linux ] fast/dom/Window/Plug-ins.html [ Skip ]
-crbug.com/318978 [ Linux ] fast/frames/sandboxed-iframe-about-blank.html [ Skip ]
 crbug.com/318978 [ Linux ] fast/frames/sandboxed-iframe-navigation-allowed.html [ Skip ]
 crbug.com/318978 [ Linux ] fast/frames/sandboxed-iframe-plugins.html [ Skip ]
-crbug.com/318978 [ Linux ] fast/replaced/invalid-object-with-fallback.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/plugins/cross-frame-object-access.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/plugins/ [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-affects-child.html [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-invalid.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-notype-url.html [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-url-01.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/1.1/plugintypes-url-02.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/object-in-svg-foreignobject.html [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/object-src-does-not-affect-child.html [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/object-src-none-allowed.html [ Skip ]
-crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/object-src-url-blocked.html [ Skip ]
 crbug.com/318978 [ Linux ] http/tests/security/contentSecurityPolicy/plugin-in-iframe-with-csp.html [ Skip ]
 crbug.com/318978 [ Linux ] permissionclient/plugin-permission.html [ Skip ]
-crbug.com/318978 [ Linux ] plugins/ [ Skip ]
+crbug.com/318978 [ Linux ] plugins/embed-attributes-setting.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/embed-prefers-plugins-for-images.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/form-value.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/fullscreen-plugins-dont-reload.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/instance-available-before-stylesheets-loaded-object.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/instance-available-before-stylesheets-loaded.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/multiple-plugins.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/nested-plugin-objects.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/no-mime-with-valid-extension.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/open-and-close-window-with-plugin.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/override-node-method.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/plugin-destroyed-enumerate.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/plugin-remove-subframe.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/refcount-leaks.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/reloadplugins-no-pages.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/tabindex.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/webview-plugin-scroll.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/empty-per-context-data.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/plugin-cancel-sync-xhr.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/plugin-initiate-popup-window.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/release-frame-content-window.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/update-widgets-crash.html [ Skip ]
+crbug.com/318978 [ Linux ] plugins/window-open.html [ Skip ]
+
 
 crbug.com/552494 scrollbars/overflow-scrollbar-combinations.html [ Pass Failure ]
 crbug.com/552494 virtual/prefer_compositing_to_lcd_text/scrollbars/overflow-scrollbar-combinations.html [ Pass Failure ]